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[dev] add framebuffer console device.

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This commit is contained in:
Dima Zavin
2009-01-15 18:09:25 -08:00
committed by Brian Swetland
parent 0d7b1b887f
commit d5b0b6a345
4 changed files with 375 additions and 0 deletions
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195
dev/fbcon/fbcon.c Normal file
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/*
* Copyright (c) 2008, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <debug.h>
#include <err.h>
#include <stdlib.h>
#include <dev/fbcon.h>
#include "font5x12.h"
struct pos {
int x;
int y;
};
static struct fbcon_config *config = NULL;
#define RGB565_BLUE 0x001f
#define RGB565_WHITE 0xffff
#define FONT_WIDTH 5
#define FONT_HEIGHT 12
static uint16_t BGCOLOR;
static uint16_t FGCOLOR;
static struct pos cur_pos;
static struct pos max_pos;
static void fbcon_drawglyph(uint16_t *pixels, uint16_t paint, unsigned stride,
unsigned *glyph)
{
unsigned x, y, data;
stride -= FONT_WIDTH;
data = glyph[0];
for (y = 0; y < (FONT_HEIGHT / 2); ++y) {
for (x = 0; x < FONT_WIDTH; ++x) {
if (data & 1)
*pixels = paint;
data >>= 1;
pixels++;
}
pixels += stride;
}
data = glyph[1];
for (y = 0; y < (FONT_HEIGHT / 2); y++) {
for (x = 0; x < FONT_WIDTH; x++) {
if (data & 1)
*pixels = paint;
data >>= 1;
pixels++;
}
pixels += stride;
}
}
/* TODO: Take stride into account */
static void fbcon_scroll_up(void)
{
unsigned short *dst = config->base;
unsigned short *src = dst + (config->width * FONT_HEIGHT);
unsigned count = config->width * (config->height - FONT_HEIGHT);
while(count--) {
*dst++ = *src++;
}
count = config->width * FONT_HEIGHT;
while(count--) {
*dst++ = BGCOLOR;
}
}
/* TODO: take stride into account */
static void fbcon_clear(void)
{
uint16_t *dst = config->base;
unsigned count = config->width * config->height;
cur_pos.x = 0;
cur_pos.y = 0;
while (count--)
*dst++ = BGCOLOR;
}
static void fbcon_flush(void)
{
if (config->update_start)
config->update_start();
if (config->update_done)
while (!config->update_done());
}
static void fbcon_set_colors(unsigned bg, unsigned fg)
{
BGCOLOR = bg;
FGCOLOR = fg;
}
void fbcon_putc(char c)
{
uint16_t *pixels;
/* ignore anything that happens before fbcon is initialized */
if (!config)
return;
if((unsigned char)c > 127)
return;
if((unsigned char)c < 32) {
if(c == '\n')
goto newline;
else if (c == '\r')
cur_pos.x = 0;
return;
}
pixels = config->base;
pixels += cur_pos.y * FONT_HEIGHT * config->width;
pixels += cur_pos.x * (FONT_WIDTH + 1);
fbcon_drawglyph(pixels, FGCOLOR, config->stride,
font5x12 + (c - 32) * 2);
cur_pos.x++;
if (cur_pos.x < max_pos.x)
return;
newline:
cur_pos.y++;
cur_pos.x = 0;
if(cur_pos.y >= max_pos.y) {
cur_pos.y = max_pos.y - 1;
fbcon_scroll_up();
}
}
void fbcon_setup(struct fbcon_config *_config)
{
uint32_t bg;
uint32_t fg;
ASSERT(_config);
config = _config;
switch (config->format) {
case FB_FORMAT_RGB565:
bg = RGB565_BLUE;
fg = RGB565_WHITE;
break;
default:
dprintf(CRITICAL, "unknown framebuffer pixel format\n");
ASSERT(0);
break;
}
fbcon_set_colors(bg, fg);
fbcon_clear();
fbcon_flush();
cur_pos.x = 0;
cur_pos.y = 0;
max_pos.x = config->width / (FONT_WIDTH+1);
max_pos.y = (config->height - 1) / FONT_HEIGHT;
}

126
dev/fbcon/font5x12.h Normal file
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/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
unsigned font5x12[] = {
0x00000000, 0x00000000,
0x08421080, 0x00020084,
0x00052940, 0x00000000,
0x15f52800, 0x0000295f,
0x1c52f880, 0x00023e94,
0x08855640, 0x0004d542,
0x04528800, 0x000b2725,
0x00021080, 0x00000000,
0x04211088, 0x00821042,
0x10841082, 0x00221108,
0x09575480, 0x00000000,
0x3e420000, 0x00000084,
0x00000000, 0x00223000,
0x3e000000, 0x00000000,
0x00000000, 0x00471000,
0x08844200, 0x00008442,
0x2318a880, 0x00022a31,
0x08429880, 0x000f9084,
0x1108c5c0, 0x000f8444,
0x1c4443e0, 0x00074610,
0x14a62100, 0x000423e9,
0x26d087e0, 0x00074610,
0x1e10c5c0, 0x00074631,
0x088443e0, 0x00010844,
0x1d18c5c0, 0x00074631,
0x3d18c5c0, 0x00074610,
0x08e20000, 0x00471000,
0x08e20000, 0x00223000,
0x02222200, 0x00082082,
0x01f00000, 0x000003e0,
0x20820820, 0x00008888,
0x1108c5c0, 0x00020084,
0x2b98c5c0, 0x000f05b5,
0x2318a880, 0x0008c63f,
0x1d2949e0, 0x0007ca52,
0x0210c5c0, 0x00074421,
0x252949e0, 0x0007ca52,
0x1e1087e0, 0x000f8421,
0x1e1087e0, 0x00008421,
0x0210c5c0, 0x00074639,
0x3f18c620, 0x0008c631,
0x084211c0, 0x00071084,
0x10842380, 0x00032508,
0x0654c620, 0x0008c525,
0x02108420, 0x000f8421,
0x2b5dc620, 0x0008c631,
0x2b59ce20, 0x0008c739,
0x2318c5c0, 0x00074631,
0x1f18c5e0, 0x00008421,
0x2318c5c0, 0x01075631,
0x1f18c5e0, 0x0008c525,
0x1c10c5c0, 0x00074610,
0x084213e0, 0x00021084,
0x2318c620, 0x00074631,
0x1518c620, 0x0002114a,
0x2b18c620, 0x000556b5,
0x08a54620, 0x0008c54a,
0x08a54620, 0x00021084,
0x088443e0, 0x000f8442,
0x0421084e, 0x00e10842,
0x08210420, 0x00084108,
0x1084210e, 0x00e42108,
0x0008a880, 0x00000000,
0x00000000, 0x01f00000,
0x00000104, 0x00000000,
0x20e00000, 0x000b663e,
0x22f08420, 0x0007c631,
0x22e00000, 0x00074421,
0x23e84200, 0x000f4631,
0x22e00000, 0x0007443f,
0x1e214980, 0x00010842,
0x22e00000, 0x1d187a31,
0x26d08420, 0x0008c631,
0x08601000, 0x00071084,
0x10c02000, 0x0c94a108,
0x0a908420, 0x0008a4a3,
0x084210c0, 0x00071084,
0x2ab00000, 0x0008d6b5,
0x26d00000, 0x0008c631,
0x22e00000, 0x00074631,
0x22f00000, 0x0210be31,
0x23e00000, 0x21087a31,
0x26d00000, 0x00008421,
0x22e00000, 0x00074506,
0x04f10800, 0x00064842,
0x23100000, 0x000b6631,
0x23100000, 0x00022951,
0x23100000, 0x000556b5,
0x15100000, 0x0008a884,
0x23100000, 0x1d185b31,
0x11f00000, 0x000f8444,
0x06421098, 0x01821084,
0x08421080, 0x00021084,
0x30421083, 0x00321084,
0x0004d640, 0x00000000,
0x00000000, 0x00000000,
};

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dev/fbcon/rules.mk Normal file
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LOCAL_DIR := $(GET_LOCAL_DIR)
OBJS += \
$(LOCAL_DIR)/fbcon.o

49
include/dev/fbcon.h Normal file
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/*
* Copyright (c) 2008, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef __DEV_FBCON_H
#define __DEV_FBCON_H
#define FB_FORMAT_RGB565 0
struct fbcon_config {
void *base;
unsigned width;
unsigned height;
unsigned stride;
unsigned bpp;
unsigned format;
void (*update_start)(void);
int (*update_done)(void);
};
void fbcon_setup(struct fbcon_config *cfg);
void fbcon_putc(char c);
#endif /* __DEV_FBCON_H */